package cool.qingqing.config;

import org.springframework.stereotype.Component;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * @author 高山青
 * @Date 2021/11/7  -   18:04
 */
@Component
@WebFilter(urlPatterns = "/*", filterName = "CorsFilter")
public class CorsFilter implements Filter {

	@Override
	public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
		HttpServletResponse response = (HttpServletResponse) res;
		HttpServletRequest reqs = (HttpServletRequest) req;
		String curOrigin = reqs.getHeader("Origin");
		response.setHeader("Access-Control-Allow-Origin", curOrigin == null ? "true" : curOrigin);
		response.setHeader("Access-Control-Allow-Credentials", "true");
		response.setHeader("Access-Control-Allow-Methods", "POST, GET, PATCH, DELETE, PUT");
		response.setHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
		chain.doFilter(req, res);
	}


	@Override
	public void init(FilterConfig filterConfig) {
		System.out.println("=======================================================chulaile=================================================");
	}

	@Override
	public void destroy() {}

}

